For many people, Bike to Work Day (which is today) is a reason to put air in their bike's tires and see if their chain is too rusty to get them to work on time. And as a growing list of photographs shows, many people who follow NPR online also ride to work.
A private spaceship owned by a company called SpaceX is scheduled to blast off from Cape Canaveral in Florida early Saturday morning.
If all goes well, the unmanned capsule will rocket up on a mission to deliver food and other supplies to the International Space Station, becoming the first commercial spacecraft to visit the outpost.
The highly anticipated mission could mark the beginning of what some say could be a new era in spaceflight, with private companies operating taxi services that could start taking people to orbit in just a few years.
The prosecution's star witness underwent a withering cross-examination on Thursday at Roger Clemens' perjury trial. Clemens, a seven-time Cy Young Award winner, is charged with lying to Congress when he testified that he never used performance-enhancing drugs. Brian McNamee, his one-time trainer, is the only witness who has firsthand evidence that contradicts the baseball-pitching ace.
Earlier this week, guided by the prosecution, McNamee testified in agonizing and repetitive detail about how he injected Clemens with steroids and human growth hormone between 1998 and 2001.
Documents have been released in the investigation of George Zimmerman's shooting of Trayvon Martin. Zimmerman, a neighborhood watch captain, shot Martin, an unarmed teen. He's claiming self-defense. Robert Siegel talks to Greg Allen.
The law grants physicians access to information about trade-secret chemicals used in natural gas drilling. Doctors say they need to know what's in those formulas in order to treat patients who may have been exposed to the chemicals.
But the new law also says that doctors can't tell anyone else — not even other doctors — what's in those formulas. It's being called the "doctor gag rule."
A huge trove of documents has been released by prosecutors in the Trayvon Martin case. Among the biggest revelations so far is that the autopsy reveals Martin had THC in his system. But police said the shooting was "ultimately avoidable."
Back when the dinosaurs ruled the Earth, some hardy bacteria took up residence at the bottom of the Pacific Ocean. Eighty six million years later, they're still there. And a new study says they're living out the most Spartan lifestyle known on this planet.
Pop singer Donna Summer, whose long career began in the 1960s and reached its apex in the disco era of the '70s, died of cancer on Thursday at her home in Naples, Florida. Summer was 63 years old. According to Billboard magazine, the singer born LaDonna Gaines had 32 singles that charted in the Hot 100. Fourteen of them made it into the top 10. To hear Sami Yenigun's appreciation of Donna Summer's life and career, as heard on All Things Considered, click the audio link.